To the Editor.
—We have just read Wilson and Green's1 article in the February 1987 issue of the Archives with great interest, combined with some apprehension. These authors describe their use of the vascular casting technique to examine the choroid of one patient whose right eye was treated with argon laser panretinal photocoagulation for diabetic retinopathy. They demonstrate the value of this mode of investigation and illustrate the importance of clinicopathologic studies. However, there are some faults with their article that must be pointed out, lest the reader without background in this technique be misled.The authors' data were obtained regarding the injection of the right (treated) eye. It is not clear whether both eyes were injected. Without comparison of the casts from the treated and untreated eyes, we find it difficult to interpret "filling defects" secondary to laser therapy as opposed to those resulting from poor injection technique.
Fryczkowski AW, Sherman MD, Hodes BL, Sato SE. Vascular Casting and Scanning Electron Microscopy in Clinicopathologic Correlations. Arch Ophthalmol. 1987;105(6):743. doi:10.1001/archopht.1987.01060060021008
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